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UDO Zoning

Published by Lake County Illinois GIS | Lake County, Illinois | Metadata Last Checked: February 19, 2026 | Last Modified: 2026-02-15T12:21:41.243Z
Download In State Plane Projection Here. The zoning shapefile defines the geographic extent of zoning districts in unincorporated Lake County as established by the Lake County Code Chapter 151: Unified Development Ordinance. The zoning shapefile is used to create the official zoning maps for the County. It is updated, as need, to reflect annexations and disconnections and rezoning.

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